The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 2004
Filed:
Nov. 14, 2001
Takaharu Miura, Yamato, JP;
Keiichi Tanaka, Ageo, JP;
Nikin Corporation, Tokyo, JP;
Abstract
Stage devices are disclosed that include gas-actuation and reaction-force-canceling mechanisms. In an embodiment, an X-axis moving guide extending in the X direction engages a lower stage via a gas bearing. Y-axis sliders (movable elements) are provided at both ends of the X-axis moving guide. A Y-axis fixed guide engages each Y-axis slider via a gas bearing. Each Y-axis slider and respective fixed guide constitute a respective pneumatic actuator. Respective mounting members are provided near the ends of each fixed guide, with interposed gas bearings, and each fixed guide is slidably affixed to a base plate. An actuator for stroke correction is provided in association with each mounting member.